Manufacture of disk wheels of metal.



F. MELAUN. MANUFAGTURE 0F DISK WHEELS 0F METAL,

APPLICATION FILED JULY 9, 1903.

0 MODEL.

a fig, 4'

No. 157,135. PATENTED APR. 12, 1904.

UNITED STATES Patented April :12, 1904.

PATENT OFFIcE.

FRANZ 'MELAUN, or OHARLOTTENBURG, GERMANY, ASSIGNOR To FRIED.

KRUPP, or ESSEN-ON THE-RUHR, GERMANY.

MANUFACTURE OF DISK WHEELS OF METAL.

. SLEECIFIGATION forming part of Letters Patent No. 757,135, dated April12, 1904.

. To all whom .it may concern.-

ject of the Emperor of Germany, and a resident of 'Charlottenburg,Germany, have invented certain new and useful Improvements in theManufacture of Disk Wheels of Metal, of whichithe following is aspecification.

According to the methods of manufacture now usual metal disk wheels,such as wroughtiron disk wheels for railway-carriages, are made by firstforging each wheel from a block under a steam-hammer in a die and thenfinishing it off by rolling it in a disk-rolling mill or(according toKrupps folding process) by first forming a hub for the wheel with a flatcentral flange from a block, wrapping first a small and then a broadflat portion around the periphery of this flange, and welding the wheelso wrapped in a die under the steamhammer. I i

The present invention will now be described with reference to theexample of construction illustrated in the accompanying drawings,

where the manufacture of a disk wheel is illustrated composed gether. p

Figure 1 shows in vertical section an angular-ring a, which can beeasily produced .un-

of three rings welded to- ,der a press or. steam-hammer in a die andwhich when the wheel is to be composed of three rings forms aportion ofthe hub. Fig.

2 shows in vertical section a conical ring 6, which likewise can beformed by pressing in a die and which is intended along with the ring-ofFig. 1 to form the complete hub.

Fig. 3 shows a ring 0 bent up from a rolled. piece of iron T-shaped incross-section. This ring already has the finished felly on its outerperiphery. These three rings are welded together in a die, as shown inFig. 4. The radial seam of the ring 0 shown at Fig. 3 is also welded.simultaneously. In some cases the meeting ends of the ring 0 may bepreviously and separately welded on a stamping-press.or

- Application filed July 9, 1903. Serial No. 164,802. (No model.)

the ring may be produced without welding in ordinary breast-rolls. Fig.5 shows in vertical section the finished disk wheel in the die.

Instead of the two rings a and b the hub may be made from a single piecehaving a broad middle flangewhich is to be welded to the ring 0.

The advantage of the manufacture described lies in the fact that asingle press or steamhammer is sufiicient for the manufacture, thedisk-rolling mill,which necessitates heavy expenses to maintain andrun,being thereby dispensed with.

The invention possesses the advantage over the folding process in thatin place of anumber of concentric welded seams there is only one suchwelded seam in each wheel, so' that the wheel consequently possessesgreater durability in working and is also cheaper to make.

What I claim as new is- 1. The method of making car-wheels whichconsists. in forming an approximately T- shaped bar into a ring,securing the ends of the bar together, and welding to the innerperiphery of the ring thus formed, aninner ring having a deflected outerperiphery of a circumference greater than the circumference of the innerperiphery of the outer or first-formed rlng.

2. The method of making car-wheels which consists in welding togetherthe inner periphery of an outer ring, T-shaped in cross-section andhaving its inner periphery extending inwardly to a point approximatelymidway between the rim and the hub of the wheel to be formed, and anouter periphery of a flange on an inner hub-ring, said flange having itsouter ring. 1

4. The method of making ear-Wheels which ,consints in forming anapproximately T shaped bar into a ring then Welding together simultaneously the ends of the bar, the inner periphery of the ring thusformed with the outer periphery of a flange on an inner hubring, and avface 0n the inner hub-ring with the face on another hub-ring.

The foregoing specification signed at Berlin, Germany, this 23d day ofJune, 1903.

FRANZ ZKZELAUN. In presence of- WOLDEMAR HAUPI. HENRY HASPER.

